I just picked up a craftsman block grinder and I noticed the light has a separate cord wired for 120 but the grinder has a 240 cord. When I found the wiring diagram it didn’t reflect there being two cords. I was wondering if this is normal and if it will be hard to switch everything back to 120 v. I am new to wiring these so I need to know what supplies I will need. I have a ratcheting crimper and wire stripper from when I rewired my boat.